Fossil

** There are three separate database files that fossil interacts
** with:
**
**    (1)  The "user" database in ~/.fossil
**
**    (2)  The "repository" database
**
**    (3)  A local checkout database named "_FOSSIL_" or ".fos"
**         and located at the root of the local copy of the source tree.
**
*/
#include "config.h"
#ifndef __MINGW32__
#  include <pwd.h>
#endif

  db_open_config();
  db_open_repository(0);
  return 1;
}

/*
** Locate the root directory of the local repository tree.  The root
** directory is found by searching for a file named "_FOSSIL_" or ".fos"
** that contains a valid repository database.
**
** If no valid _FOSSIL_ or .fos file is found, we move up one level and 
** try again. Once the file is found, the g.zLocalRoot variable is set
** to the root of the repository tree and this routine returns 1.  If
** no database is found, then this routine return 0.
**
** This routine always opens the user database regardless of whether or
** not the repository database is found.  If the _FOSSIL_ or .fos file
** is found, it is attached to the open database connection too.
*/
int db_open_local(void){
  int i, n;
  char zPwd[2000];
  char *zPwdConv;
  static const char *aDbName[] = { "/_FOSSIL_", "/.fos" };
  
  if( g.localOpen) return 1;
  if( getcwd(zPwd, sizeof(zPwd)-20)==0 ){
    db_err("pwd too big: max %d", sizeof(zPwd)-20);
  }
  n = strlen(zPwd);
  zPwdConv = mprintf("%/", zPwd);

    usage("REPOSITORY-FILENAME");
  }
  if( db_open_local() ){
    fossil_panic("already within an open tree rooted at %s", g.zLocalRoot);
  }
  file_canonical_name(g.argv[2], &path);
  db_open_repository(blob_str(&path));
  db_init_database("./_FOSSIL_", zLocalSchema, (char*)0);
  db_open_local();
  db_lset("repository", blob_str(&path));
  db_record_repository_filename(blob_str(&path));
  vid = db_int(0, "SELECT pid FROM plink y"
                  " WHERE NOT EXISTS(SELECT 1 FROM plink x WHERE x.cid=y.pid)");
  if( vid==0 ){
    db_lset_int("checkout", 1);